1787, May 25 Constitutional Convention meets in Philadelphia, Pennsylvania, to revise Articles of Confederation, the compact among states governing the newly independent nation. New Constitution is adopted by delegates on September 17.
Winnebago County Iowa (Vacant / Not In Use) has 1 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Round Barn, Norway Township. Prominent architectural styles found in Winnebago Country are .